Timeline for Tunnel at depth problem
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Apr 25, 2018 at 15:32 | comment | added | Ian Turner | With regard to ground control the comparison with coal mines and tunnels at 1000m is an important one. Coal mines only work in the form mentioned because the groundwater is pumped out so that they are dry. For a railway under the sea this wouldn't be achievable using pumping. Grouting used in Norwegian subsea tunnels might be achievable although the geology is very different. If the tunnel adopted a waterproof lining then the water pressure would be very high. At a depth of 1000m the water pressure could be maybe an order of magnitude higher than the highest pressures for other tunnels. | |
| Oct 1, 2017 at 10:19 | vote | accept | murmansk | ||
| Oct 1, 2017 at 8:39 | comment | added | Jem Eripol | Nice explanation. Covered most aspects of engineering. | |
| Oct 1, 2017 at 8:14 | history | answered | Fred | CC BY-SA 3.0 |